[Haskell-beginners] Re: Non-recursive binding expression

<j.romildo <at> gmail.com> writes:

Hello.

Is there any non-recursive binding expression in Haskell?

Something that would allow me to write, for instance,

test = let' xs = [] in let' xs = 3 : xs in let' xs = 8 : xs in let' xs = 7 : xs in xs

Here let' is an hypothetical construction similar to let, except that it would be non-recursive. In the example, the value of test would be [7,8,3].

So, is there something in this line in Haskell?

Regards,

José Romildo

Well, it's not a nice thing to do (probably), but you can write test = head $ do xs <- [ [] ] xs <- [ 3:xs ] xs <- [ 8:xs ] xs <- [ 7:xs ] return xs